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Leokris [45]
3 years ago
7

I thought of a two-digit number. The unit digit of my number is 7 more than the tens digit cubed. What is my number?

Mathematics
1 answer:
konstantin123 [22]3 years ago
7 0

9514 1404 393

Answer:

  18

Step-by-step explanation:

Only 1 and 2 will have single-digit cubes. Only 1^3 will still be a single digit after 7 is added. The tens digit must be 1, and the units digit must be 1+7=8.

The number is 18.

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How to solve this problem
Kamila [148]
First you to eliminate i from denominator.
mult by (7+3i) above and below
=(49+42i-9)/(49-9)
which is (40+42i)/40 which can simplify
4 0
3 years ago
How tall is the goal post if its shadow is 18ft. The height of the flagpole is 20 ft and its shadow is 8 ft.?
tamaranim1 [39]

You can set up an inequality to solve this. You can either do big to small --> \frac{x}{18} = \frac{20}{8} or small to big --> \frac{x}{18} = \frac{8}{20}. I'm going to be using big to small because I think it's a little easier.

\frac{20}{8} = \frac{x}{18}

Cross multiply and you will get:

360 = 8x

Isolate x:

x = \frac{360}{8}

x = \frac{90}{2}

x = 45

The goal post is 45 feet tall. Hope this helped. Good luck. : )

6 0
4 years ago
What is the sum of the exterior angle measures for an irregular convex octagon?
Eva8 [605]
The sum of ext. angles on any convex polygon is always 360 degrees
4 0
3 years ago
The original price of a DVD is $12. The sale price is 75% off the original price. Find the sale price of the DVD.
lord [1]

Answer:

9 lol

Step-by-step explanation:

comming from a highscholer its 12% of 12 =9

hope this helps

7 0
2 years ago
2+2<br> ive genuily cant remeber pls help
Naily [24]

Answer:

fish

Step-by-step explanation:

turn one 2 90 degrees clockwise and rotate the other one 270 degrees clockwise and overlap the two and you get fish :3

(funny joke but is its real the answer is 4)

6 0
3 years ago
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